Acquisition and Restructuring Costs (Costs Related To Acquisition And Restructuring) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Other Expenses [Abstract]
Acquisition costs	$ 76	$ 26	$ 16
Restructuring charges, net	28	199	253
Total acquisition and restructuring costs	$ 104	$ 225	$ 269